Scientist: Laboratory animals have access to ample food, and they get relatively little exercise. These factors can s...

Gianna-Rossi March 27, 2019

Answers A and B

It seems that there is an important, but subtle distinction between answers A and B, what is it?

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shunhe December 22, 2019

Hi @Gianna-Rossi,

Skylar just posted a response to another thread that helps address this issue. Let us know if you have any other questions after reading it!